NIFI-6525 - Support JsonPath delete expressions

[mans2singh]

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Description of PR

Support JsonPath delete expressions

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[pvillard31]

Hey @mans2singh - can you rebase your PR against master?

[mans2singh]

@pvillard31 -

I've rebased to master and updated the code. Please let me know if you have any additional advice.

Thanks

[pvillard31]

Minor change to do, otherwise I made somes tests and it LGTM. I'm +1 once the comment is addressed.

[pvillard31]

Merged to master, thanks @mans2singh

[mans2singh]

Thanks @pvillard31 for your all your help.